<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>常用容器标签</title>
    <style>
        .a{
           display: flex;
           flex-direction: row;
           justify-content: space-between; 
        }
        .b{
            width: 100px;
            height: 100px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div class="a">
        <div class="b">测试</div>
        <div class="b">测试</div>
    <div class="b">测试</div>
    </div>
   
</body>
</html>